EP4215433A1 - Schwimmkörper - Google Patents

Schwimmkörper Download PDF

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Publication number
EP4215433A1
EP4215433A1 EP21891763.1A EP21891763A EP4215433A1 EP 4215433 A1 EP4215433 A1 EP 4215433A1 EP 21891763 A EP21891763 A EP 21891763A EP 4215433 A1 EP4215433 A1 EP 4215433A1
Authority
EP
European Patent Office
Prior art keywords
tank
safety valve
valve
gas
connection pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21891763.1A
Other languages
English (en)
French (fr)
Other versions
EP4215433A4 (de
Inventor
Kazuya Abe
Shinsuke Morimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Shipbuilding Co Ltd
Original Assignee
Mitsubishi Shipbuilding Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2020188463A external-priority patent/JP7519883B2/ja
Application filed by Mitsubishi Shipbuilding Co Ltd filed Critical Mitsubishi Shipbuilding Co Ltd
Publication of EP4215433A1 publication Critical patent/EP4215433A1/de
Publication of EP4215433A4 publication Critical patent/EP4215433A4/de
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
    • B63J2/02—Ventilation; Air-conditioning
    • B63J2/08—Ventilation; Air-conditioning of holds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/035—Orientation with substantially horizontal main axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/052—Size large (>1000 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/054—Size medium (>1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/013—Carbone dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/043—Localisation of the removal point in the gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/046—Localisation of the removal point in the liquid
    • F17C2223/047—Localisation of the removal point in the liquid with a dip tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/04—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by other properties of handled fluid after transfer
    • F17C2225/042—Localisation of the filling point
    • F17C2225/046—Localisation of the filling point in the liquid
    • F17C2225/047—Localisation of the filling point in the liquid with a dip tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F17C2250/032—Control means using computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships

Definitions

  • the present disclosure relates to a floating structure.
  • PTL 1 discloses a configuration in which a tank of an existing gas transport ship is used for both transporting liquefied petroleum gas (LPG) and transporting liquefied carbon dioxide, and a configuration in which the tank of the existing gas transport ship is used for both transporting liquefied ammonia gas and transporting liquefied carbon dioxide.
  • LPG liquefied petroleum gas
  • the tank configured as described above includes a safety valve for releasing a pressure inside the tank to an outside of the tank when the pressure inside the tank exceeds a design pressure.
  • the safety valve When a flammable liquefied gas such as the liquefied petroleum gas is stored in the tank, the safety valve is connected to a vent riser via a pipe.
  • the safety valve When the safety valve is opened to discharge gaseous liquefied gas in the tank, the gaseous liquefied gas is not directly discharged to an atmosphere from a discharge port of the safety valve, and is guided to the vent riser from the safety valve through the pipe.
  • the gaseous liquefied gas is discharged to the atmosphere from an outlet of the vent riser disposed at a high place.
  • the safety valve is opened, and gaseous carbon dioxide in which the liquefied carbon dioxide is vaporized is discharged to the outside of the tank. Since a pressure outside the tank is an atmospheric pressure, a pressure of the carbon dioxide is lowered. Due to the lowered pressure, there is a possibility that the carbon dioxide may be solidified to generate dry ice. When a pipe to the vent riser is connected to the discharge port of the safety valve, there is a possibility that the pipe may be internally blocked due to the generated dry ice.
  • the tank in which both the liquefied carbon dioxide and the liquefied gas other than liquefied carbon dioxide can be selected as a storage object, in accordance with the storage object, it is necessary to carry out work for switching a discharge destination by independently installing the safety valve for the liquefied carbon dioxide and the safety valve for the liquefied gas.
  • the present disclosure is made to solve the above-described problems, and an object of the present disclosure is to provide a floating structure which can easily and safely switching a discharge destination of a tank storage object to be discharged from a safety valve.
  • a floating structure including a floating main structure, a tank, a first safety valve, a first pressure introduction line, a second safety valve, a vent riser, a connection pipe, a second pressure introduction line, and a switching valve.
  • the tank is disposed in the floating main structure.
  • the tank can selectively store liquefied carbon dioxide and liquefied gas other than liquefied carbon dioxide.
  • the first safety valve includes a first pilot valve operated when a pressure inside the tank reaches a predetermined set pressure. The first safety valve discharges gas inside the tank to an outside of the tank by operating the first pilot valve.
  • the first pressure introduction line transmits the pressure inside the tank to the first pilot valve.
  • the second safety valve includes a second pilot valve operated when the pressure inside the tank reaches a predetermined set pressure.
  • the second safety valve feeds the gas inside the tank to the outside of the tank by operating the second pilot valve.
  • the vent riser is disposed apart from the second safety valve.
  • the vent riser discharges the gas to the outside.
  • the connection pipe connects the second safety valve and the vent riser.
  • the connection pipe guides the gas fed from the second safety valve to the vent riser.
  • the second pressure introduction line transmits the pressure inside the tank to the second pilot valve.
  • the switching valve selectively switches a transmission destination of the pressure inside the tank between the first pilot valve and the second pilot valve.
  • a floating structure including a floating main structure, a tank, a safety valve, a vent riser, and a connection pipe.
  • the tank is disposed in the floating main structure.
  • the tank can selectively store liquefied carbon dioxide and liquefied gas other than liquefied carbon dioxide.
  • the safety valve discharges the gas inside the tank to the outside of the tank when a pressure inside the tank reaches a predetermined set pressure.
  • the vent riser is disposed apart from the safety valve.
  • the vent riser discharges the gas to the outside.
  • the connection pipe connects the safety valve and the vent riser.
  • the connection pipe includes a detachable pipe and a connection pipe main body.
  • the detachable pipe forms a portion of the connection pipe in an extending direction of the connection pipe.
  • the connection pipe main body forms a remaining portion of the connection pipe.
  • the detachable pipe is configured to be detached from the connection pipe main body.
  • a ship 1A as a floating structure includes at least a hull 2 as a floating main structure and a tank facility 10.
  • the hull 2 has a pair of broadsides 3A and 3B, a ship bottom (not illustrated), and an upper deck 5 which form an outer shell thereof.
  • the broadsides 3A and 3B have a pair of broadside skins each forming right and left broadsides.
  • the ship bottom (not illustrated) has a ship bottom skin connecting the broadsides 3A and 3B.
  • the pair of broadsides 3A and 3B and the ship bottom (not illustrated) cause the outer shell of the hull 2 to have a U-shape in a cross section orthogonal to a bow-stern direction Da.
  • the upper deck 5 described as an example in this embodiment is a whole deck exposed outward.
  • a superstructure 7 having an accommodation space is formed on the upper deck 5 on a stern 2b side. A position of the superstructure 7 is merely an example, and may be disposed on a bow 2a side of the hull 2, for example.
  • a cargo tank storage compartment (hold) 8 is formed inside the hull 2.
  • a vent riser 9 (to be described later) is disposed on the upper deck 5 of the hull 2. Disposition of the vent riser 9 is merely an example, and safety valve connection pipes of a plurality of the tanks 11 may be connected to one vent riser 9.
  • a plurality of the tank facilities 10 are disposed inside the cargo tank storage compartment 8 along the bow-stern direction Da.
  • two tank facilities 10 are disposed at an interval in the bow-stern direction Da.
  • the tank facility 10 includes at least the tank 11, a loading pipe 13, a unloading pipe 14, and a safety valve system 20A.
  • the tank 11 is disposed in the hull 2.
  • the tank 11 has a cylindrical shape extending in a horizontal direction.
  • the tank 11 is not limited to the cylindrical shape, and the tank 11 may have a spherical shape or a square shape.
  • the tank 11 can selectively store liquefied carbon dioxide L1 and liquefied gas L2 other than the liquefied carbon dioxide L1 inside the tank 11.
  • the liquefied gas L2 other than the liquefied carbon dioxide L1 includes liquefied petroleum gas (LPG), liquefied natural gas (LNG), and ammonia.
  • LPG liquefied petroleum gas
  • LNG liquefied natural gas
  • ammonia ammonia.
  • the liquefied carbon dioxide L1 and the liquefied gas L2 which are stored inside the tank 11 may be simply referred to as a stored gas L, except when the liquefied carbon dioxide L1 and the liquefied gas L2 need to be distinguished from each other.
  • the loading pipe 13 loads the stored gas L supplied from an onshore facility into the tank 11.
  • the loading pipe 13 penetrates a top portion of the tank 11 from an outside of the tank 11, and extends to the inside of the tank 11.
  • a tip portion of the loading pipe 13 is open inside the tank 11.
  • the unloading pipe 14 feeds the stored gas L inside the tank 11 to the outside of the ship.
  • the unloading pipe 14 penetrates the top portion of the tank 11 from the outside of the tank 11, and extends to the inside of the tank 11.
  • a pump (not illustrated) is provided in a tip portion of the unloading pipe 14. The pump suctions the stored gas L inside the tank 11.
  • the unloading pipe 14 feeds the stored gas L suctioned by the pump to the outside of the tank 11 (outside of the ship).
  • the safety valve system 20A mainly includes a first safety valve 21, a second safety valve 31, a connection pipe 45, a vent riser 9, a first pressure introduction line 41, a second pressure introduction line 42, and a switching valve 43.
  • the first safety valve 21 is disposed in the top portion of the tank 11.
  • the first safety valve 21 is configured to function when the liquefied carbon dioxide L1 is stored inside the tank 11.
  • the first safety valve 21 releases a pressure inside the tank 11 when a gas phase (gaseous) pressure inside the tank 11 reaches a predetermined set pressure.
  • the first safety valve 21 is a so-called pilot type, and includes a main valve 22 and a first pilot valve 23.
  • the main valve 22 is disposed inside a main valve valve casing 24.
  • An inflow port 24a and a discharge port 24b are formed in the main valve valve casing 24.
  • the inflow port 24a communicates with the inside of the tank 11.
  • the discharge port 24b is open toward the outside of the tank 11. That is, the discharge port 24b is open to an atmosphere.
  • the main valve 22 is configured to be connectable to and detachable from the inflow port 24a. When the main valve 22 closes the inflow port 24a, the first safety valve 21 is brought into a blocked state.
  • the pressure inside the tank 11 acts on the main valve 22 from the inflow port 24a side.
  • the main valve valve casing 24 includes a back pressure chamber 24d on a side opposite to the inflow port 24a side with respect to the main valve 22.
  • the first pilot valve 23 applies a pilot pressure for biasing the main valve 22 in a closing direction.
  • the first pilot valve 23 includes a tubular cylinder 25, a valve body 26, and a biasing member 27.
  • the valve body 26 is disposed to be capable of reciprocating inside the cylinder 25.
  • the biasing member 27 is disposed on one side in a direction in which the biasing member 27 reciprocates with respect to the valve body 26.
  • the biasing member 27 biases the valve body 26 to the other side inside the cylinder 25.
  • a pressure introduction chamber 25s is formed on the other side (side opposite to the biasing member 27) with respect to the valve body 26 inside the cylinder 25.
  • the pressure inside the tank 11 is transmitted to the pressure introduction chamber 25s through a first pressure introduction line 41 (to be described later).
  • the pressure introduction chamber 25s can communicate with the inside of the tank 11 via the first pressure introduction line 41, and is configured so that the inside of the pressure introduction chamber 25s and a gas phase inside the tank 11 have the same pressure when communicating with the inside of the tank 11.
  • the pressure introduction chamber 25s and the back pressure chamber 24d of the main valve valve casing 24 are connected to communicate with each other via a communication line 28.
  • the valve body 26 of the first pilot valve 23 configured in this way is normally biased to the pressure introduction chamber 25s side by the biasing member 27.
  • the pressure inside the pressure introduction chamber 25s also increases in response thereto.
  • the valve body 26 moves inside the cylinder 25 against the biasing force of the biasing member 27.
  • the pressure inside the pressure introduction chamber 25s reaches a predetermined set pressure, for example, the inside of the pressure introduction chamber 25s is released to the atmosphere, and the pressure inside the pressure introduction chamber 25s decreases.
  • the pressure decrease inside the pressure introduction chamber 25s is transmitted to the back pressure chamber 24d through the communication line 28.
  • the second safety valve 31 is disposed in the top portion of the tank 11.
  • the second safety valve 31 is configured to function when the liquefied gas L2 is stored inside the tank 11.
  • the second safety valve 31 releases the pressure inside the tank 11 when the pressure in a gas phase inside the tank 11 reaches a predetermined set pressure.
  • the second safety valve 31 includes a main valve 32 having the same structure as the first safety valve 21, and a second pilot valve 33.
  • the main valve 32 is disposed inside the main valve valve casing 34.
  • An inflow port 34a and a discharge port 34b are formed in the main valve valve casing 34.
  • the inflow port 34a communicates with the inside of the tank 11.
  • a connection pipe 45 (to be described later) is connected to the discharge port 34b.
  • the main valve 32 is configured to be connectable to and detachable from the inflow port 34a.
  • the main valve 32 closes the inflow port 34a, the second safety valve 31 is brought into a blocked state.
  • the pressure inside the tank 11 acts on the main valve 32 from the inflow port 34a side.
  • the main valve valve casing 34 includes a back pressure chamber 34d on a side opposite to the inflow port 34a side with respect to the main valve 32.
  • the second pilot valve 33 applies a pilot pressure for biasing the main valve 32 in a closing direction.
  • the second pilot valve 33 has the same configuration as the first pilot valve 23, and includes a tubular cylinder 35, a valve body 36, and a biasing member 37.
  • the valve body 36 is disposed to be capable of reciprocating inside the cylinder 35.
  • the biasing member 37 is disposed on one side in a direction in which the biasing member 37 reciprocates with respect to the valve body 36.
  • the biasing member 37 biases the valve body 36 to the other side inside the cylinder 35.
  • a pressure introduction chamber 35s is formed on the other side (side opposite to the biasing member 37) with respect to the valve body 36 inside the cylinder 35.
  • the pressure inside the tank 11 is transmitted to the pressure introduction chamber 35s through a second pressure introduction line 42 (to be described later).
  • the pressure introduction chamber 35s can communicate with the inside of the tank 11 via the second pressure introduction line 42, and is configured so that the inside of the pressure introduction chamber 35s and a gas phase inside the tank 11 have the same pressure when communicating with the inside of the tank 11.
  • the pressure introduction chamber 35s and the back pressure chamber 34d are connected to communicate with each other via a communication line 38.
  • the valve body 36 of the second pilot valve 33 is normally biased to the pressure introduction chamber 35s side by the biasing member 37.
  • the pressure inside the pressure introduction chamber 35s also increases in response thereto.
  • the valve body 36 moves inside the cylinder 35 against the biasing force of the biasing member 37.
  • the pressure inside the pressure introduction chamber 35s reaches a predetermined set pressure, for example, the inside of the pressure introduction chamber 35s is released to the atmosphere, and the pressure inside the pressure introduction chamber 35s decreases.
  • the pressure decrease inside the pressure introduction chamber 35s is transmitted to the back pressure chamber 34d through the communication line 38.
  • the vent riser 9 is connected to the second safety valve 31. More specifically, the vent riser 9 is connected to the second safety valve 31 via the connection pipe 45.
  • the vent riser 9 is disposed apart from the second safety valve 31, and discharges the vaporized gas of the liquefied gas L2 fed from the second safety valve 31 to the outside (in other words, the atmosphere).
  • the connection pipe 45 connects the second safety valve 31 and the vent riser 9, and guides the gas fed from the discharge port 34b of the second safety valve 31 to the vent riser 9.
  • the first pressure introduction line 41 is a pipe for transmitting the pressure inside the tank 11 to the first pilot valve 23.
  • the second pressure introduction line 42 is a pipe for transmitting the pressure inside the tank 11 to the second pilot valve 33.
  • the first pressure introduction line 41 and the second pressure introduction line 42 are connected to the tank 11 via the switching valve 43.
  • the switching valve 43 in this embodiment is connected to the tank 11 via a pressure supply pipe 44.
  • the switching valve 43 is a so-called three-way valve, and can communicate with the pressure supply pipe 44 by selecting one of the first pressure introduction line 41 and the second pressure introduction line 42.
  • the switching valve 43 causes the gas phase inside the tank 11 to communicate with the first pressure introduction line 41 or the second pressure introduction line 42 through the pressure supply pipe 44. In this way, the switching valve 43 can selectively switch a transmission destination of the pressure inside the tank 11 between the first pilot valve 23 and the second pilot valve 33.
  • the switching valve 43 causes the first pressure introduction line 41 on the first safety valve 21 side and the gas phase inside the tank 11 to communicate with each other.
  • the switching valve 43 causes the second pressure introduction line 42 on the second safety valve 31 side and the gas phase inside the tank 11 to communicate with each other.
  • a switching operation of the switching valve 43 may be manually performed by an operator, or may be automatically performed.
  • the switching valve 43 includes a detection unit 43s that detects a transmission destination of the pressure inside the tank 11.
  • the detection unit 43s has a limit switch that detects a switching state of a switching switch of the switching valve 43.
  • An information output unit 43m that outputs information indicating the transmission destination of the pressure detected by the detection unit 43s to the outside is connected to the switching valve 43.
  • the information indicating the transmission destination of the pressure detected by the detection unit 43s indicates whether the transmission destination of the pressure is the first safety valve 21 side or the second safety valve 31 side.
  • the information output unit 43m can output the information indicating the transmission destination of the pressure by lighting a lamp indicating the transmission destination of the pressure or displaying character information indicating the transmission destination of the pressure.
  • the first safety valve 21 when the liquefied carbon dioxide L1 is stored in the tank 11, the first safety valve 21 is caused to function.
  • the first safety valve 21 functions by transmitting the pressure inside the tank 11 to the first pilot valve 23 through the first pressure introduction line 41.
  • the first pilot valve 23 When the pressure in the gas phase inside the tank 11 reaches a predetermined set pressure, the first pilot valve 23 is operated.
  • the gas inside the tank 11 gas of the liquefied carbon dioxide L1 is discharged to the outside of the tank 11 by the first safety valve 21.
  • the second safety valve 31 when the liquefied gas L2 other than the liquefied carbon dioxide L1 is stored in the tank 11, the second safety valve 31 is caused to function.
  • the second safety valve 31 functions by transmitting the pressure inside the tank 11 to the second pilot valve 33 through the second pressure introduction line 42.
  • the second pilot valve 33 When the pressure in the gas phase inside the tank 11 reaches a predetermined set pressure, the second pilot valve 33 is operated.
  • the second safety valve 31 feeds the gas inside the tank 11 (vaporized gas of the liquefied gas L2) to the outside of the tank 11.
  • the gas fed from the tank 11 is fed to the vent riser 9 through the connection pipe 45. Thereafter, the gas guided to the vent riser 9 is discharged to the outside from the vent riser 9.
  • the vaporized gas of the liquefied gas L2 is discharged from the vent riser 9 disposed apart from the second safety valve 31.
  • the vaporized gas of the liquefied carbon dioxide L1 is directly discharged from the first safety valve 21.
  • the first safety valve 21 is not connected to the connection pipe 45 and the vent riser 9. Therefore, even in a case where the dry ice is generated when the liquefied carbon dioxide L1 discharges the vaporized gas in the first safety valve 21, it is possible to prevent the connection pipe 45 from being blocked due to the generated dry ice.
  • the switching valve 43 can selectively switch the transmission destination of the pressure inside the tank 11 between the first pilot valve 23 and the second pilot valve 33. That is, the switching valve 43 may be switched as follows. When the liquefied carbon dioxide L1 is stored in the tank 11, the pressure inside the tank 11 is transmitted to the first safety valve 21, and when the liquefied gas L2 is stored, the pressure inside the tank 11 is transmitted to the second safety valve 31. In this manner, a proper safety valve (first safety valve 21 or second safety valve 31) can be selected to function in accordance with a storage object to be stored in the tank 11. Therefore, the discharge destination of the storage object in the tank 11 can be easily and safely switched.
  • the information indicating the transmission destination of the pressure inside the tank 11 in the switching valve 43 which is detected by the detection unit 43s is output to the outside by the information output unit 43m. Therefore, an operator can easily recognize the transmission destination of the pressure inside the tank 11 in the switching valve 43, based on the information output from the information output unit 43m. That is, when a type of the storage object stored inside the tank 11 and the safety valve functioning by transmitting the pressure inside the tank 11 are different, the operator can easily recognize and deal with the difference.
  • the connection pipe 45 includes a detachable pipe 49 forming a portion of the connection pipe 45 and a connection pipe main body 48 forming a remaining portion of the connection pipe 45 excluding the detachable pipe 49.
  • the detachable pipe 49 forms the portion of the connection pipe 45 in an extending direction of the connection pipe 45.
  • the detachable pipe 49 is configured to be detached from the connection pipe main body 48.
  • the detachable pipe 49 in this modification example is disposed on a side close to the second safety valve 31 in the connection pipe 45.
  • the detachable pipe 49 is attached so that the connection pipe main body 48 serving as the remaining portion of the connection pipe 45 and the second safety valve 31 can communicate with each other, and is flange-connected to the connection pipe main body 48, for example.
  • the detachable pipe 49 is normally mounted as a portion of the connection pipe 45.
  • the second safety valve 31 functions, the pressure inside the tank 11 increases, and exceeds a predetermined set pressure, the vaporized gas of the liquefied carbon dioxide L1 inside the tank 11 can be discharged to the outside (atmosphere) via the second safety valve 31.
  • the detachable pipe 49 is in a detached state in preparation for a case where the dry ice is generated by the gas of the carbon dioxide discharged from the second safety valve 31. Therefore, the discharge port 34b of the second safety valve 31 is brought into a state close to a case where the discharge port 34b is directly opened to the atmosphere. In this manner, even when the dry ice is generated by the gas of the carbon dioxide discharged from the discharge port 34b during an operation of the second safety valve 31, it is possible to prevent the connection pipe 45 from being blocked due to the generated dry ice.
  • the detachable pipe 49 is disposed on the side close to the second safety valve 31 in the connection pipe 45.
  • the detachable pipe 49 may be disposed at any position in the connection pipe 45.
  • a ship 1B as a floating structure includes at least a safety valve system 20B in the tank facility 10.
  • the tank 11 can selectively store the liquefied carbon dioxide L1 and the liquefied gas L2 other than the liquefied carbon dioxide L1 inside the tank 11.
  • the liquefied gas L2 other than the liquefied carbon dioxide L1 includes liquefied petroleum gas (LPG), liquefied natural gas (LNG), and ammonia.
  • the loading pipe 13 loads the stored gas L supplied from an onshore facility into the tank 11.
  • the loading pipe 13 penetrates a top portion of the tank 11 from an outside of the tank 11, and extends to the inside of the tank 11.
  • a tip portion of the loading pipe 13 is open inside the tank 11.
  • the safety valve 51 is disposed in the top portion of the tank 11.
  • the safety valve 51 releases the pressure inside the tank 11 when the pressure of the stored gas L inside the tank 11 reaches a predetermined set pressure.
  • the safety valve 51 may be of a pilot type as in the first embodiment.
  • the vent riser 9 is disposed apart from the safety valve 51.
  • the vent riser 9 discharges the vaporized gas of the liquefied gas L2 fed from the safety valve 51 to the outside.
  • the vent riser 9 is connected to the safety valve 51 via the connection pipe 55.
  • connection pipe 55 connects the safety valve 51 and the vent riser 9.
  • the connection pipe 55 is connected to a discharge port 54b of the safety valve 51.
  • the connection pipe 55 partially includes a detachable pipe 59 which is detachable.
  • the detachable pipe 59 is flange-connected to a connection pipe main body 58 which is a remaining portion of the connection pipe 55.
  • the detachable pipe 59 of the second embodiment is disposed between the connection pipe main body 58 and the safety valve 51 on a side close to the safety valve 51 in the connection pipe 55.
  • the detachable pipe 59 may be disposed at any position in the connection pipe 55 without being limited to the side close to the safety valve 51.
  • the safety valve 51 is operated, the vaporized gas of the liquefied carbon dioxide L1 inside the tank 11 is discharged from the discharge port 54b due to the gas of the carbon dioxide, and the dry ice is generated, it is possible to prevent the connection pipe 55 from being blocked due to the generated dry ice.
  • the vaporized gas of the liquefied gas L2 fed from the safety valve 51 during the operation of the safety valve 51 can be guided to the vent riser 9 and discharged to the outside through the connection pipe 55.
  • the detachable pipe 59 is simply attached and detached in accordance with a type of the storage object to be stored in the tank 11. In this manner, a discharge form from the safety valve 51 can be properly selected. The operator can easily recognize that the detachable pipe 59 is in a detached state. Therefore, the discharge destination of the storage object in the tank 11 to be discharged from the safety valve 51 can be easily and safely switched. In addition, since the safety valve 51 can be used for both the liquefied carbon dioxide L1 and the liquefied gas L2, costs for the facility can be reduced.
  • the first safety valve 21, the second safety valve 31, and the safety valve 51 are provided one by one.
  • a plurality of the first safety valves 21, the second safety valves 31, and the safety valves 51 may be respectively provided.
  • the set pressures of the first safety valve 21, the second safety valve 31, and the safety valve 51 may be differently changed in a stepwise manner.
  • the configuration may include one, three, or more tanks 11.
  • the ships 1A and 1B have been described as examples of the floating structure.
  • the floating structure may be an offshore floating structure facility which does not include a propulsion mechanism.
  • liquefied gas L2 examples include liquefied petroleum gas, liquefied natural gas, and ammonia.
  • the vaporized gas of the liquefied gas L2 is discharged from the vent riser 9 disposed apart from the second safety valve 31.
  • the vaporized gas of the liquefied carbon dioxide L1 is directly discharged from the first safety valve 21. Therefore, even when the dry ice is generated when the carbon dioxide gas is discharged by the first safety valve 21, it is possible to prevent the connection pipe 45 from being blocked due to the generated dry ice.
  • the switching valve 43 selectively switches the transmission destination of the pressure inside the tank 11 between the first pilot valve 23 and the second pilot valve 33. That is, the switching valve 43 may be switched as follows.
  • the pressure inside the tank 11 is transmitted to the first safety valve 21, and when the liquefied gas L2 is stored, the pressure inside the tank 11 is transmitted to the second safety valve 31.
  • the proper safety valves 21 and 31 can function depending on a storage object to be stored in the tank 11. Therefore, the discharge destination of the storage object in the tank 11 which is discharged from the safety valves 21 and 31 can be easily and safely switched.
  • connection pipe 45 serving as a portion of the connection pipe 45 connected to the second safety valve 31 is detached, the gas discharged from the discharge port 34b of the second safety valve 31 is immediately discharged to the atmosphere. Therefore, when the first safety valve 21 is not normally operated in a state where the liquefied carbon dioxide L1 is stored in the tank 11, the connection pipe 45 is detached. In this manner, even when the dry ice is generated by the gas of carbon dioxide discharged from the discharge port 34b during the operation of the second safety valve 31, it is possible to prevent the connection pipe 45 from being blocked due to the generated dry ice.
  • connection pipe 55 includes the detachable pipe 59 forming a portion of the connection pipe 55 in an extending direction of the connection pipe 55, and the connection pipe main body 58 forming a remaining portion of the connection pipe 55.
  • the detachable pipe 59 is configured to be detached from the connection pipe main body 58.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Artificial Filaments (AREA)
EP21891763.1A 2020-11-12 2021-11-04 Schwimmkörper Pending EP4215433A4 (de)

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JP2020188463A JP7519883B2 (ja) 2020-11-12 浮体
PCT/JP2021/040650 WO2022102517A1 (ja) 2020-11-12 2021-11-04 浮体

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US5269347A (en) * 1992-12-22 1993-12-14 Keystone International Holdings Corp. Fluid pressure isolator apparatus
NO324883B1 (no) * 2001-12-03 2007-12-27 Statoil Asa Fartoy
JP2004125039A (ja) 2002-10-01 2004-04-22 Mitsubishi Heavy Ind Ltd Ｃｏ２運搬方法、流体貯蔵装置、プラグ発射装置、プラグ回収装置及び流体貯蔵方法
CN103591334A (zh) * 2013-11-22 2014-02-19 吴江市东吴机械有限责任公司 一种进出口双联动切换阀
WO2016088159A1 (ja) * 2014-12-01 2016-06-09 千代田化工建設株式会社 機器の安全管理装置、機器の安全管理方法及び天然ガスの液化装置
KR101680529B1 (ko) * 2015-02-19 2016-11-28 바르실라 핀랜드 오이 극저온 탱크 배열체 및 이를 구비하는 해양 선박
JP6582347B2 (ja) * 2015-12-10 2019-10-02 三菱造船株式会社 安全弁システム、タンク、船舶、船舶における安全弁システムの運用方法
JP6829560B2 (ja) * 2016-08-12 2021-02-10 トキコシステムソリューションズ株式会社 緊急遮断弁装置
FR3073601B1 (fr) * 2017-11-16 2019-11-22 Gaztransport Et Technigaz Dispositif d'inertage d'une cuve de stockage de gaz liquefie pour un navire de transport de ce gaz
JP2018105507A (ja) * 2018-04-02 2018-07-05 北海道エア・ウォーター株式会社 炭酸ガス発生装置
JP6568988B1 (ja) * 2018-08-28 2019-08-28 三井海洋開発株式会社 ガス放出用増速ノズル、洋上構造物のガス放出システム、洋上構造物、及び、洋上構造物のガス放出方法
US10804871B1 (en) 2019-05-14 2020-10-13 Honeywell International Inc. Cryogenic radio-frequency resonator for surface ion traps

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JP2022077598A (ja) 2022-05-24
EP4215433A4 (de) 2024-03-13

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